Railway truss type brake beam end structure



May 20, 1952 5 e. BUSSE RAILWAY TRUSS TYPE BRAKE BEAM END STRUCTUREOriginal Filed Feb. 5, 1944 INVENTORI EDWIN G. BUSSE FIG. 3.

Patented May 20, 1952 RAKLWAY TBUSS TYPE BRAKE BEAM END STRUCTURE EdwinG. Busse, Chicago, Ill., assignor to Chicago Railway Equipment Company,Chicago, Ill., a

corporation of Illinois Original application February 3, 1944, SerialNo.

Divided and this application December 16, 1946, Serial No. 716,452

The invention relates to brake beams such as are used on railway rollingstock, and more particularly to the end construction of truss type brakebeams in which the converging ends of the compression and tensionmembers are riveted together and mount one or more end members forcarrying the brake shoe and for supporting the beam from the truck sideframe. This application is a division of an application filed by thepresent inventor February 3, 1944, Serial No. 520,867, now abandoned.

One object of the invention is to adapt a beam of the type described forslidably engaging a bracket on the truck side frame adjacent the end ofthe beam.

Another object is to facilitate the replacement of a support-engagingpart of the beam and of the brake head associated with the beam.

Another object is to utilize the end member of the beam to more securelyassemble the ends of the tension and compression members of the beam.

These and other detail objects as will appear below are attained by thestructure illustrated inv the accompanying drawings, in which Figure 1is a top view of a beam embodying the invention, adjacent portions ofthe supporting side frame structure being indicated also.

Figure 2 is an end view of the left-hand end of the beam shown in Figure1 and is drawn to enlarged scale.

Figure 3 is a horizontal section taken approximately on the line 3--3 ofFigure 2.

Figure 4 is a vertical section taken on the line 4-4 of Figure 3, and

Figures 5 and 6 are sections corresponding to Figures 3 and 4,respectively, but illustrating another form of the invention.

The beam illustrated in Figures 1-4 includes a compression member Ipreferably of channel cross-section, a tension member 2, preferably of aflat rectangular bar section of substantially greater width thanthickness, a strut 3, end members 4, each carrying a brake head 5arranged to mount a friction shoe 6 for engaging a truck wheel I. Alsocarried by end member 4 is a part 8 extending beyond the end of the mainmembers of the beam and disposed to slidably engage one or moresupporting and guiding elements on the truck side frame indicated at 9.

The end of tension member 2 is bent to extend alongside the inner faceof the end portion of the channel compression member and at its end isshouldered or bent to form a lip l0 engaging the end of the compressionmember.

14 Claims. (01. 188-228.6)

Each end member 4 includes a rear body portion forming a pocket'with athrough opening extending longitudinally of the beam and receiving theend portions of the compression and tension members. A horizontallydisposed rivet l l extends through the end portions of the beam tensionand compression members and through the front and rear walls 12 and I3of the end beam member pocket which receives the main member endportions.

The end member also includes a pocket, in front of that just described,having upper and lower walls I4 and I 5 and opening outwardly of the endof the beam to receive the narrow portion l6 of the support-engagingpart 8.

The latter has a wide outer portion 11 extending transversely of thelength of the beam inopposite directions from its narrow pocket-receivedportion It to provide an extended bearing on the truck frame elements 3.Preferably outer portion I! is inclined from the general plane of thebeam as determined by the compression and tension members and strut,thus permitting the beam to move along the radius of a wheel at an angleto the horizontal towards and away from the wheel as the brakes areapplied and released and, at the same time, providing for theapplication of braking forces in a horizontal direction as naturallyfolows the disposition of the brake pull rods and levers (not shown)extending longitudinally of the truck.

It will be understood that the inclination of portion H and supportelement 9 relative to the general plane of the beam, which is disposedhorizontally, is arranged for a brake which is below the level of thewheel axle, as is customary. If the brake beam were positioned at thesame level as the wheel axle, then portion H and its supporting bracket9 would be disposed horizontally.

The brake head 5 has a rearwardly opening jaw, the upper and lower legsI8 of which receive between them the forwardly extendin flanges l4, l5of the beam end member 4 and also the in-. Wardly extending portion isof the support device. Vertically disposed rivets l9 extend throughelements l8, l4, l5 and hold the head and support device assembled withthe end member. If de sired, the rearwardly directed edge of portionll'i may be welded to the opposing edge of member 4 to better securethese parts together.

With this arrangement, the head 5 and support device 8 may be removedand either or both replaced without disassembling the beam main membersl, Zand end members 4.

The forwardly extending portion of end member 4 and the pocket-formingelements [8 in the brake head are in substantial alignment and the brakehead elements are disposed intermediate the ends of the brake head andsymmetrically about the transverse center line C of the head and,accordingly, the head may be reversed top for bottom or placed at eitherend of the beam, thus eliminating the necessity of right-hand andleft-hand patterns for casting the head and making it possible to shiftthe head to compensate for unequal wear on its ends or sides. If thebeam is to be supported at the same height as the center of the wheeland hence to move on a horizontal line with the support device portions16 and H lying in the same plane, then this device may be reversed topfor bottom as well as being applicable to their end of the beam.

Preferably each of the brake heads is recessed at R to receive the lowercross bar of a box-type hanger which may be used in an emergency or ifthe beam should be installed in a truck which is not provided with thesupport brackets opposite the ends of the beam.

Figure illustrates another form of the invention in which the beamcompression member 21 and tension member 22 and strut (not shown)correspond to those previously described, but the end member 23 and thesupport-engaging device 24 are formed integrally with each other and thepocket in the end member in front of the end portions of the compressionand tension members receives a rearwardly projecting tongue 25 on thebrake head 23 instead of the brake head being provided with a pocket toreceive the end memher as in the structure previously described. Thebrake head and end member are held assembled by rivets 21 correspondinggenerally to rivets 9.

The guide engaging portion 28 of the end member is disposedasymmetrically about the pocket and it will be necessary to haveright-hand and left-hand end members to mount the brake heads.

The details of the beam may be varied otherwise than as describedwithout departing from the spirit of the invention, and the exclusiveuse of those modifications coming within the scope of the claims iscontemplated.

What is claimed is:

1. In a railway truss type brake beam including a compression member anda tension member converging at the end of the beam with their endportions extending alongside of each other and the tension memberextending beyond the com-' pression member and shouldered to engage theend of the compression member, an end member surrounding the adjacentend portions of the tension and compression members transversely of thebeam and holding them assembled, and a separately formed integral brakehead with a transverse passageway having relatively fixed walls andreceiving said end member to mount the brake head on the end member andfacing forwardly of the beam to mount a wheel engaging device, and meansdetachably securing the brake head to the end member independently ofthe compression and tension members.

2. In a railway truss type brake beam including a compression member anda tension member having its end shouldered and directly engaging the endof the compression member, an and member having a pocket openinglengthwise of the beam and receiving the adjacent ends of the tensionand compression members and having a pocket opening forwardly of thebeam and arranged to receive a mounting lug on a brake head.

3. In a railway truss type brake beam including a compression member anda tension member having its end shouldered and directly engaging the endof the compression member, an end member having a pocket openinglengthwise of the beam and receiving the adjacent ends of the tensionand compression members and having a pocket opening forwardly of thebeam, a brake head having a shoe mounting face and having a lugprojecting rearwardly therefrom and inserted in said latter-mentionedpocket, securing elements extending vertically through said lug and theupper and lower walls of the pocket receiving the same, and securingelements extending horizontally through the ends of the compression andtension members and the forward and rear walls of the-pocket receivingthe same.

4. Structure as described in claim 3 in which one side wall of thepocket receiving the tension and compression members forms the rear wallof the pocket receiving the brake head mounting lugs and the latter arespaced from said wall to accommodate the end of the element securing thecompression and tension members to the end member.

5. In a railway truss type brake beam, a compression member, a tensionmember having its end shbuldered to engage the end of the compressionmember, an end member having a pocket receiving the adjacent ends of thetension and compression members, means extending transversely of thebeam through and securing said compression, tension and end memberstogether, means on the end member extending forwardly from said pocketand arranged to mount a brake head, and means projecting from the endmember lengthwise of the beam beyond said pocket and the ends of thetension and compress on members and arranged to slidably engage anadjacent truck part to support and guide the beam in its movementtowards and from the truck wheels.

6. In a railway truss type brake beam includ-- ing a compression memberand a tension member converging at the end of the beam with their endportions extending alongside of each other and the tension memberextending beyond and shouldered to engage the end of the compressionmember, an end member surrounding said end portions and thereby holdingthem assembled and provided with a pocket opening outwardly of the endof the beam, and a beam support device including a portion inserted insaid pocket and a portion extending outwardly therefrom to engage asupport bracket on an adjacent truck part.

7. In a railway truss type brake beam including a compression member anda tension member converging at the end of the beam with their endportions extending alongside of each other and the tension memberextending beyond and shouldered to engage the end of the compressionmember, an end member including a body forming a pocket receiving theends of said compres sion and tension members and secured thereto, therebeing vertically spaced substantially horizontal flanges extendingforwardly from said body, a beam support device having a portion in-'serted between said flanges and having a portion extending outwardlytherefrom to engage a support bracket on an adjacent truck part, and abrake head having vertically spaced flanges receiving between them saidend member flanges and the enclosed portion of said device.

8. A railway brake beam structure as described in claim 7 which includesmeans securing together the compression member, tension member and endmember, and separate means securing together the end member, supportdevice and brake head flanges, whereby the brake head and support devicemay be removed from the beam without affecting the assembly of the otherbeam parts.

9. A new article of manufacture comprising a brake beam end member forapplication to the ends of a truss type beam compression and tensionmembers extending alongside each other and hooked together, the endmember including a body portion forming a pocket which opens in onedirection and is adapted to receive the ends of the compression andtension members and to hold them assembled, there being elementsextending from said body portion in a direction perpendicular to thedirection of the pocket opening and adapted to carry a brake headforwardly of said pocket.

10. A brake beam end member as described in claim 9 in which the bodyportion includes a support device extending outwardly from the pocket toengage a support bracket on a truck part.

11. A new article of manufacture comprising a brake beam end member forapplication to the ends of a truss type beam compression and tensionmembers extending alongside each other and hooked together, the endmember including a body portion having a through passage adapted toreceive from either end the ends of the beam compression and tensionmembers and to hold them assembled with each other, said end memberbeing provided with a recess substantially paralleling said passage andadapted to receive from either end a support device extending beyond theend member to engage a support bracket on a truck part.

12. In a railway truss type brake beam, a tension member, a compressionmember, said members having end portions extending alongside of eachother in abutting relation with the tension member extending beyond andshouldered to engage the end of the compression member, an end membercomprising a body surrounding said end portions and holding themassembled, there being a web projecting from said body beyond andabreast of the ends of the compression and tension members and arrangedto slidably engage a support bracket on an adjacent truck part, said endmember including a part projecting forwardly of said web for mounting aseparately formed brake head, and individual elements respectivelysecuring said brake head to said end member and securing said memberstogether.

13. In a railway truss type brake beam, a channel-section compressionmember, a flat bar section tension member with its end portion extendingbeyond the end of the compression member and shouldered to engage theend of the compression member, an end member forming a pocket closelysurrounding the adjacent end portions of said compression member andtension member transversely of the beam, a securing device extendingtransversely of the beam through the end member and tension member andthe upright web of said compression member, said end member having anextension forwardly of said pocket and provided with a forwardly openingrecess, a part seated in said recess and extending beyond the end of thecompression and tension members and beyond said end member and disposedto slidably engage a support bracket on an adjacent part of a truckframe, and a brake head structure mounted on said end member andprojecting therefrom transversely of the beam.

14. An end member for a railway truss type brake beam, said end membercomprising a body forming a pocket opening at opposite sides of the bodyfor insertion, from either side of the member, of the juxtaposed endportions of a beam compression and tension member, there being a forwardextension on said body of less depth than said body for mounting aseparately formed brake head and having a through opening for insertion,from either side of the member, of a separately formed support-engagingdevice.

EDWIN G. BUSSE.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 895,269 Huntoon Aug. 4, 1908960,935 Huntoon June 7, 1910 2,170,113 Busch Aug. 22, 1939 2,348,092Parke May 21, 1944 2,356,720 Aurien et a1; Aug. 22, 1944 2,398,917 BuschApr. 23, 1946 2,419,115 Busse Apr. 15, 1947

